EP 3886972 A1 20211006 - CHECK VALVE WITH INTEGRATED FILTER
Title (en)
CHECK VALVE WITH INTEGRATED FILTER
Title (de)
RÜCKSCHLAGVENTIL MIT INTEGRIERTEM FILTER
Title (fr)
CLAPET ANTIRETOUR À FILTRE INTÉGRÉ
Publication
Application
Priority
- US 201816205122 A 20181129
- US 2019059238 W 20191031
Abstract (en)
[origin: US2020173567A1] A check valve may include an upper housing defining an inlet, a lower housing defining an outlet, and a cavity interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet. The check valve may further include a flexible valve member mounted in the cavity to selectively permit fluid flow in a first direction, and prevent fluid backflow in a second direction opposite to the first direction. A filter member may be mounted in the upper housing, upstream of the flexible valve member. The filter member may have an elongated portion configured to maximize surface area thereof exposed to the fluid flow, and restrict passage of undesirable matter in fluid flowing through the check valve.
IPC 8 full level
A61M 39/24 (2006.01); A61M 5/165 (2006.01)
CPC (source: EP US)
A61M 39/24 (2013.01 - EP); F16K 15/14 (2013.01 - US); A61M 5/165 (2013.01 - EP); A61M 2005/1652 (2013.01 - EP); A61M 2039/2406 (2013.01 - EP); A61M 2039/242 (2013.01 - EP); A61M 2039/2453 (2013.01 - EP); A61M 2205/7545 (2013.01 - EP); Y10T 137/7888 (2015.04 - US)
Citation (search report)
See references of WO 2020112299A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 10837565 B2 20201117; US 2020173567 A1 20200604; AU 2019388631 A1 20210708; CA 3120343 A1 20200604; CN 113164732 A 20210723; CN 113164732 B 20240412; CN 118267603 A 20240702; EP 3886972 A1 20211006; JP 2022510263 A 20220126; JP 2024019640 A 20240209; JP 7408656 B2 20240105; US 11421794 B2 20220823; US 11773994 B2 20231003; US 2021071769 A1 20210311; US 2022397206 A1 20221215; WO 2020112299 A1 20200604
DOCDB simple family (application)
US 201816205122 A 20181129; AU 2019388631 A 20191031; CA 3120343 A 20191031; CN 201980079241 A 20191031; CN 202410394221 A 20191031; EP 19806367 A 20191031; JP 2021530844 A 20191031; JP 2023214446 A 20231220; US 2019059238 W 20191031; US 202017099631 A 20201116; US 202217892829 A 20220822